Tube flaring device and holder therefor



Nov. 29, 1949 H. sAcl-lu ETAL 2,489,360,

TUBE FLARING DEVICE AND HOLDER THEREFOR Filed July 14, 1948 Z'Sheets-Sheet 1 INVENTORS.

' /z! 1 4/ 15 19% m I The/P Attorney Nov. 29, 1949 f ACm -"r' TUBE FLAR'ING DEVICE AND HOLDER THEREFOR 2 Sheets-Sheet 2 fined July 14) 1948 INVENTORS.

and Harry 265 5725 50 7/1421) Attorney Patented Nov. 29, 1949 DEVICE-AND 'e-HOIJDER THERE-FOR 'J1ermanfBach1iand Jfarr s. Shapiro, .ohiea o, H 'iIlL, .ass'ignors'lto iflliicago Specialty Mfg. 43.0,, lInc,.,.;Chicago,I Ill.,;,a corporation of Illinois This :invention relates to a tube fiaring' -devi-ee andholder therefor and' has fofi its principal ob ject the provision of an improved construction of z the. character hereinafterdescribed which will be .highly .eflicient iin iuse-and economical in manufacture.

The :tube flaring :tool embodying-this inven-. tion is especially Ldesigned for forming .on the end of .a tube hansoutwardly extending flange- I -which andon top of the base pIateflO 'thetube against .wh ichxaecoupling: nut -:.or-:the. like is adapted to bearwhemtwo gtubes are connectedtogether by suchlcoupling=nut or union as it isscommonly termed.

.In this view .of:the 'invention,-=it is the-obiect -plate N. This "supporting "plate ll carries. 'a bushing l8, and vjournalledin this bushing t8 is a shaft-l9. *I-hisi'shaft l9 passes through "a cam'head'20 having a cam'surfacefil: 'This'cam head may be *formed as an integral part "of the bushing 1 8. -"Ihe's'haft l 9 'ca'rries a transversely,

to provide 7 a .tool :for' (providing. :this rflange with the .;minimum effort upon the part-t of the operator.

It is also the objectsof-ithe:invention topro-- vide a tool for :this purpose which 1 can :be conveniently held :in the. hands during-.opera'tiom thereof and which-is capableof .op'erationuipontubesof various diameters.

Another object L-of :the invention. is Lto =provid'e 1 in astool of this character-a -.simp1e ;and easily-- operable means for effectively latchingethe tube -F holding structure .in ipropervaligmnent-with :respect to the flaring :tool and "in :which the tool holder 'isyselfeal igning rfor :prope'rlyxpositioning 1 the tube in alignment with ztheaflaringzztool.

Another object of theinvention is to provide in such a tool a ifasteacting cam whereby it requires but half a revolution of the flaring tool to perform the flaring operation.

Other objects will appear hereinafter. TIIe inVentiOn-cOnsistS in the novel -combination and arrangement of parts-to behereinafter described and claimed. v

The invention will be best understood by reference to the accompanying drawings showing; the preferred form of construction, andfiin;

which:

Fig. l is aperspectiveview-of-thetool with'the tube holder removed therefrom;

Fig. 2 is an elevational view of the flaring tool embodying our invention;

Fig. 3 is a fragmentary sectional detail view taken substantially on line 3-3 of Fig. 2;

Fig. 4 is a fragmentary elevational view showing the flaring tool in operation upon the tube;

Fig. 5 is a perspective View showing the tube holder in position upon the support embodied in the invention;

Fig. 6 is a perspective view of the self-aligning tube holder embodied in the invention.

The several objects of the invention are acf2 complished by "thepr'eferred form of construction' shown" in the accompanying drawings.

'In this connection, a base *plate'is indicated at In. This plate has "formed't'hereinan open- 5 -ing H and lcommunicatingwith this opening "is a slot 12 through "which thetube't'o'ibe operated upon is passed for positioning in't'h'e opening .l'l

of rivets or the li'keis a guidestrap l'tybeneath holding tool l5 is-adapted 'to'beipo'siti'oned.

"Extending upwardly from 'the'base plate 10" arespaced posts Hi, and mounted "on theupp'er end portion of these posts; .16 is a "supporting.

extending pin 2-2 'adapted toride on the cam-surshape and design.

Surrounding--th'e shaft 1 9' and disposed *between the bushing! S-and the washer 'earrietl bythe shaft I9; is anexpansion springfidwhich normally retains the pin 22-at the base of-the cam-surface -2 I Preferably formed "as an integral part-of the;

shaft 19 and extending-at-right"angleswithrespect thereto, is a handle-21 having -'a knurledendportion- 28 providing a "gripping surface.

Pivotally carried by' 'onebf'the posts lfi is'a 35 hO1ding' bar '29 ef eIQngated' fQrmatiOn. This holding bar 29*provides-a"1atch head 30 which is adapted toengage an adja'cen't side of thetube holder l 5 in amanner 'hereinafter explained.

'Carriedby the opposite "posts it; is a laterally l s'extending pin 3| adapted to be-"proiected into 5 one of severahopenings H fer-med in-one o'f the bar sections'33 of theitub'e-holder- 5.

This tube holder I5 comprises, in addition to the bar section 33, a bar section 34 having the 5 same configuration and shape as the bar section 33. These sections are connected together by means of a link 35 connected to the ends of the bar sections 33 and 34 by means of pins 36.

Formed in the bar sections 33 and 34 are complementary recesses 31 which form together,

ameters and, as shown, certain of the openings are countersunk as at 40, and the base of these countersunk openings provides a tapered seat 4| against which the flared end portion 42 of the tube is adapted to bear.

In the bar section 34 there is provided a socket 43, and adapted to engage in this socket 43 when the bars are in abutting relation with respect to each other is a pin 44.

A tube holder constructed in accordance with the disclosure herein and as shown particularly in Fig. 6, permits the bar sections 33 and 34 to be self-aligning, in that the pin and socket 43 and 44, respectively, properly locate the recesses of the bar sections with respect to each other to provide the openings into which the tubes are adapted to be mounted.

In operation a tube is positioned in an opening having a diameter corresponding to the outside diameter of the tube. This is accomplished by pivoting the bar sections 33 and 34 to the position shown in Fig. 6, after which the tube is located in its proper opening and the bar sections then moved into abutting relation with respect to each other. The wall portions 45 of the openings engaging the tube are knurled so as to provide a gripping surface to hold the tube against rotation during the flaring operation. After the tube has been properly mounted in its respective opening, the tube holder is mounted upon the base plate by inserting the holder beneath the guide strap [4. In this position the tube will be located in the opening II and by reason of the engagement of the pin 3| with the adjacent socket 32, the tube will be properly aligned with respect to the flaring tool 24. In this position of the tube holder, the holding bar 29 is pivoted to bear the latch head 30 thereof against the adjacent side of the tube holder whereby the tube holder will be latched upon the plate II] for flaring operation. Generally, it is the practice to hold this bar 29 in the left-hand with the bar bearing against the body and then grasping the handle 21 by the right-hand and rotating the handle in a clockwise direction as viewed in Fig. 1. This bears the pin 22 against the cam surface 2|. As the handle 27 is rotated in said clockwise direction, the cam surface and pin will project the rotating flaring head 24 into flaring operation upon the tube 39. After the flaring tool has been rotated half a revolution, the pin will move off the cam surface 21, and under the action of the spring 26 the flaring head 24 will be quickly and automatically moved back into its normal position of rest as shown in Fig. 1.

From this it is apparent that the flaring operation is completed by a half revolution of the flaring head, thus increasing the speed of the flaring operation. It is apparent that a simple arrangement is provided by which the tube holder is releasably latched in tube flaring position and that the flaring operation requires the minimum effort upon the part of the operator. These and 4 other features of our improved flaring tool result in its efficient operation, and, as it requires but a simple operation upon the part of the operator, the flaring operation may be accomplished quickly and with the minimum of efiort upon the part of the operator.

As the holding bar 29 is held firmly in the hand, it is manifest that displacement of the tube holder is prevented during the flaring operation.

Our improved flaring tool may be manufactured at an economical cost.

While we have illustrated and described the preferred form of construction for carrying our invention into efiect, this is capable of variation and modification without departing from the spirit of the invention. We, therefore, do not Wish to be limited to the precise details of construction set forth, but desire to avail ourselves of such variations and modifications as come within the scope of the appended claim.

Having thus described our invention, what we claim as new and desire to protect by Letters Patent is:

A flaring device and tube holder comprising a substantially flat mounting plate having an opening formed therein and an entrance slot for the opening leading from one edge of the plate, a pair of spaced posts carried by the plate and extending upwardly therefrom, a supporting plate carried by said posts above and in spaced relation to the mounting plate, a guide strap carried by said mounting plate over the entrance slot, a tube holder adapted to be slidably positioned upon said mounting plate beneath said strap to move a tube through the entrance slot to a position to be supported in said opening by said holder, means for latching said tube holder upon said mounting plate with the tube located in said opening, a rotatable flaring tool carried by said supporting plate in alignment with the tube carried by said holder, and a handle for rotating said flaring tool extending in a horizontal plane substantially parallel with the supporting plate, said latching means having a hand bar by which said mounting plate is supported during flaring operation of the flaring tool on said tube, said hand bar extending in the same plane as the handle and pivotally connected to the mounting plate by one of said posts.

HERMAN BACHLI. HARRY S. SHAPIRO.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,018,832 Bulmer Oct. 29, 1935 2,277,410 Neukirch Mar. 24, 1942 2,350,054 McIntosh May 30, 194A 

